Here it is:
You can repair UFT One 15.0.1 or LeanFT with the below steps:
Windows 7
Press the 'Start' button
Find command prompt and right click on it.
Select ''Run as Administrator''. A Dos Prompt will appear.
Copy the following command to the dos prompt and press enter.
UFT One 15.0.1:
MsiExec.exe /fm {8D3A7DBA-5E44-4510-BD0D-C7D8CC03AE02}
LeanFT:
MsiExec.exe /fm {58895DDA-ED9F-4355-9CF1-BF1CF65C3DD7}
Windows 8/8.1
From the Charms screen, start typing the word 'Command'. A list of matching programs will appear.
Right click 'Command Prompt'.
Select Run As Administrator. A Dos Prompt will appear.
Copy the following command to the dos prompt and press enter.
UFT One 15.0.1:
MsiExec.exe /fm {8D3A7DBA-5E44-4510-BD0D-C7D8CC03AE02}
LeanFT:
MsiExec.exe /fm {58895DDA-ED9F-4355-9CF1-BF1CF65C3DD7}
Windows 10
Press the 'Start' button
Start typing ''Command'' and the Command Prompt should appear on the list. Right click on it.
Select ''Run as Administrator''. A Dos Prompt will appear.
Copy the following command to the dos prompt and press enter.
UFT One 15.0.1:
MsiExec.exe /fm {8D3A7DBA-5E44-4510-BD0D-C7D8CC03AE02}
LeanFT:
MsiExec.exe /fm {58895DDA-ED9F-4355-9CF1-BF1CF65C3DD7}